Method for preparation of high purity manganese sulfate and zinc sulfate from waste zinc-manganese batteries

Abstract

The invention discloses a method for preparation of high purity manganese sulfate and zinc sulfate from waste zinc-manganese batteries. Zinc-manganese batteries mainly contain manganese, zinc, iron, copper and other valuable metal components, and by means of sulfuric acid dissolution, iron powder replacement, oxidation neutralizing for iron removal, extraction purification and separation, crystallization and other processes, high purity manganese sulfate and zinc sulfate products can be prepared. The high purity manganese sulfate obtained by the invention can be used for preparation of battery materials, and the high purity zinc sulfate can be used for medicine, feed, food, chemical industry and other fields. The method provided by the invention has the characteristics of high resource utilization and recovery rate, and high product quality, etc.

Description

technical field

[0001] The invention belongs to the field of comprehensive utilization of waste resources, in particular to the field of recycling valuable metals of waste zinc-manganese batteries. Background technique

[0002] As the types and quantities of portable electronic appliances are gradually increasing, the usage of batteries is also increasing day by day, and the amount of waste batteries produced is also increasing. As we all know, waste batteries contain alkaline, acidic, organic electrolytes, heavy metals such as lead, mercury, cadmium, nickel, cobalt, manganese, copper, etc. If they are not treated effectively, they will cause serious pollution to the environment; through water, The entry of food and air into the human body is also a serious threat to human health; in addition, the random loss of waste batteries is also a waste of resources. Therefore, the effective recycling of waste batteries has dual meanings of economic value and social benefit. [0003...

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